3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $content = <<<CONTENT a @tag CONTENT; $matches = array(); var_dump(preg_match('/^\n\w*@/', $content, $matches, null, 1) === 1);
based on 4opOJ
Output for 4.3.3 - 7.2.0
bool(false)
Output for 4.3.0 - 4.3.2
Warning: Wrong parameter count for preg_match() in /in/4gklB on line 8 bool(false)